This fixes an issue that appears when running check_procs over NRPE,
where the default shell is configured to (for example) dash, as is the
case on Debian.
dash (and tcsh, and mksh, and probably others), when invoked with -c forks an additional process
to execute the argument string. Contrast this with bash, which does not
do this, provided that the argument string simply can be exec()'d as-is.
To demonstrate:
$ bash -c pstree
init─┬ ..
...
├─sshd─-─sshd───pstree
versus
$ dash -c pstree
init─┬ ..
...
├─sshd─-─sshd───dash───pstree
The consequence of this fork is that the following invocation:
/opt/plugins/check_procs -a init
will result in this output:
PROCS OK: 2 processes with args 'init' | processes=2;;;0;
because the check_procs, in addition to finding the actual init process,
finds its parent shell as well.
This example is a bit contrived, but I think it illustrates the
point.
This wouldn't really be a problem, and normally isn't, if it weren't
for the fact that NRPE uses a call to popen() which does exactly the
above (executes '/bin/sh -c ...'), causing inconsistent behaviour
between distributions and much confusion for end users.
The argument may be made that the dash process spawned by NRPE is just a
process like any other, and should therefore be included in the process
count just like any other. However, this is not very intuitive, because
of the previously mentioned inconsistencies.
The argument might also well be made that we're _never_ interested in the
immediate ancestor of the plugin, and while it is unknown how many
installations have already made the necessary modifications to their
setups to make up for the fact that the plugin behaves the way it does,
it is not deemed worthwhile to entertain such workarounds.
Thus, this patch ignores the parent process.
See also these bug reports:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626913http://sourceforge.net/p/nagiosplug/bugs/512/https://github.com/nagios-plugins/nagios-plugins/issues/999https://bugs.op5.com/view.php?id=4398
Add a note regarding the removal of the "contrib" directory to the NEWS
file. This note is missing from the NEWS file shipped with the 1.5
release, though.
We moved our web site away from Drupal and the snapshots/guidelines away
from SourceForge. The new infrastructure scripts will be maintained in
a separate repository together with the Markdown source of the new web
site.
Tests sometimes fila when running multiple parallel tests using the
same cache file because it is written everytime a test parameter
is read. Since there is no locking, this might fail from time to time.
newer (or x86) solaris implementations have interface names like e1000g0
which includes numbers. So we reverse the interface number detection to
get the last number, instead of the first number.
if check_imap expects a string that never occurs, it currently waits forever
because thats how the imap protocoll works. Use a receive timeout in that case
so we can exit early with a proper error message.
